Lately, I'm not really keen on shipping pf anything below KK+ for 100bb vs an unk/most likely reg on positions CO, MP, and UTG. I'd rather call and play it postflop. I usually get a clear answer about the villains hand at the Turn by most and I can get his whole stack in when I hit eg Axx w/ AK vs AQ. I'm more likely to ship AK than QQ in these kind of situations for FEq, though.

But the idea came from a coach that have been playing NL200-1k for a few years now, so I think it's worth asking about different opinions about microstakes.

I think that against unknowns we should go broke here all the time especially in a CO vs blinds spot, when his sizing is so weak.
We do get worse hands to stack off (JJ for example) and we do have fold equity as well.

Calling is of course an option, but I think that it is an option if we do have information about villain.